Bronco Kowalski

You can't see me!

_{This character has no official visual representation in any Transformers product or media... yet, at least.}

Bronko Kowalski, AKA the "Poughkeepsie Piledriver", is a football player.

Fiction

2015 Robots in Disguise cartoon

Bronko's helmet found its way to Denny Clay's scrapyard. When Russell wanted to go play at the football field, Denny provided him with the helmet. Hank commented that it looked like something Bronko Kowalski would wear, and Russell confirmed it had previously been owned by Kowalski. More than Meets the Eye